Browse Forums Building Standards; Getting It Right! Re: Stormwater and tank water pipes 3Dec 27, 2021 11:06 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Stormwater and tank water pipes 5Dec 28, 2021 10:15 am Plumbers know the regulated pipe depths and slopes but sometimes the required slope is compromised by the available depth after the developer has pre-scraped the site. From NCC Part 2 3.1.3.5 Stormwater drainage (c) Cover to stormwater drains: the cover to 90 mm Class 6 UPVC stormwater drains installed underground must be not less than— (i)under soil — 100 mm; or (ii)under paved or concrete areas — 50 mm; or (iii)under areas subject to light vehicle traffic— (A)reinforced concrete — 75 mm; or (B)paved — 100 mm. NOTE: I have pasted the above directly from the NCC. Re the reference to "90 mm Class 6 UPVC stormwater drains (sic)"..... Class 6 UPVC pipe is pressure rated UPVC pressure pipe which isn't made in nominal 90mm in any case. UPVC stormwater pipe is not pressure rated but often (unwisely) used for charged water tank carrier pipes, a practice I consider substandard. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Building Standards; Getting It Right! Thank you for the generous offer. I need to get the plumber out to give me an explanation. As mentioned I haven't seen any rain water discharge from pipes 1& 3. It… 7 10834 Grab a hose, insert it at the top of the inlet/down pipe and turn the water on and see where the water is escaping from. Then you'll know. 3 8490 If you can calculate the reasonable charged head from let's say 100mm below the gutter to the top of where the vertical riser's horizontal discharge pipe will be, that… 11 17540 |